Mainly a marine species, it nonetheless is able to thrive in freshwater. At River Safari, it is displayed at the Mississippi River zone and at the Manatee exhibit.
@Zooish These are awesome fish, I was lucky enough to see a small school of about five in very shallow water snapping up small fish and darting around the water. (This was on St Thomas, U.S. Virgin Islands on a beach only a few metres from shore)